There is very little for Orthodox Christians in this category. The devotional apps are almost all Western and almost all Protestant by default — the calendar they follow is nobody's calendar, the Fathers appear as decorative quotations, and the fasts, which order half the Orthodox year, are simply absent.
Devout asks which tradition you stand in before it gives you anything, and Orthodox is one of the answers.
The year, not the week
Orthodox prayer is ordered by the Church year, and a devotional that ignores it is asking you to keep two calendars at once. Devout follows the Orthodox lectionary and the synaxarion — the commemoration of the day, whoever it belongs to, rather than a saint chosen for general appeal.
The reflection is written from inside the tradition: the Fathers as authorities rather than ornaments, theosis rather than a purely forensic account of salvation, and a reading of Scripture that assumes the Church has been reading it for two thousand years and has something to say about it.
What the morning looks like
One page. A passage of Scripture, a reflection on it, a voice from the Christian past, and a question waiting in a private journal. The same shape every day, so the practice has somewhere to settle.
It is meant to sit beside the prayer rule you already keep, not to replace it. Ten minutes with the text and a pen, before the day gets hold of you.
What it is not
It is not a prayer book, and it will not read the hours to you. There is no audio, no icon corner, no attempt to reproduce the liturgy on a screen — those things belong where they are. It is also not a catechism: if you are enquiring into Orthodoxy, your priest is the right first call and this is not a substitute for one.
What it is, is the reading, kept daily, in your own tradition's voice.